In the Kings' dungeon, Calvin and Mark, seasoned ballbusters, break in new shoes while breaking in a new sub. Calvin's polished oxfords gleam menacingly as he steps onto the initiate's balls, causing him to yelp. Mark, in heavy combat boots, follows, his massive sole grinding into the sub's tender flesh. They take turns, their shoes leaving imprints on the initiate's swollen, aching balls. The room echoes with the sub's cries and the Kings' encouraging grunts, the scent of sweat and leather filling the air until the sub finally submits, broken and begging.